/*
Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
Copyright (C) ITsysCOM GmbH

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/
package engine

import (
	"reflect"
	"testing"
	"time"

	"github.com/cgrates/cgrates/utils"
)

func TestSingleResultMerge(t *testing.T) {
	t1 := time.Date(2012, time.February, 2, 17, 0, 0, 0, time.UTC)
	t2 := time.Date(2012, time.February, 2, 17, 1, 0, 0, time.UTC)
	cd := &CallDescriptor{Category: "0",
		Tenant: "vdf", Subject: "rif",
		Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc1, _ := cd.getCost()
	if cc1.Cost != 61 {
		t.Errorf("expected 61 was %v", cc1.Cost)
	}
	t1 = time.Date(2012, time.February, 2, 17, 1, 0, 0, time.UTC)
	t2 = time.Date(2012, time.February, 2, 17, 2, 0, 0, time.UTC)
	cd = &CallDescriptor{Category: "0", Tenant: "vdf",
		Subject: "rif", Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc2, _ := cd.GetCost()
	if cc2.Cost != 61 {
		t.Errorf("expected 60 was %v", cc2.Cost)
	}
	cc1.Merge(cc2)
	if len(cc1.Timespans) != 2 || cc1.Timespans[0].GetDuration().Seconds() != 60 || cc1.Timespans[1].GetDuration().Seconds() != 60 {
		for _, ts := range cc1.Timespans {
			t.Logf("TS: %+v", ts)
		}
		t.Error("wrong resulted timespan: ", len(cc1.Timespans), cc1.Timespans[0].GetDuration().Seconds())
	}
	if cc1.Cost != 122 {
		t.Errorf("Exdpected 120 was %v", cc1.Cost)
	}
	d := cc1.UpdateRatedUsage()
	if d != 2*time.Minute || cc1.RatedUsage != 120.0*float64(time.Second) {
		t.Errorf("error updating rating usage: %v, %v", d, cc1.RatedUsage)
	}
}

func TestMultipleResultMerge(t *testing.T) {
	t1 := time.Date(2012, time.February, 2, 17, 59, 0, 0, time.UTC)
	t2 := time.Date(2012, time.February, 2, 18, 0, 0, 0, time.UTC)
	cd := &CallDescriptor{Category: "0", Tenant: "vdf",
		Subject: "rif", Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc1, _ := cd.getCost()
	if cc1.Cost != 61 {
		//ils.LogFull(cc1)
		t.Errorf("expected 61 was %v", cc1.Cost)
		for _, ts := range cc1.Timespans {
			t.Log(ts.RateInterval)
		}
	}
	t1 = time.Date(2012, time.February, 2, 18, 00, 0, 0, time.UTC)
	t2 = time.Date(2012, time.February, 2, 18, 01, 0, 0, time.UTC)
	cd = &CallDescriptor{Category: "0", Tenant: "vdf", Subject: "rif",
		Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc2, _ := cd.getCost()
	if cc2.Cost != 30 {
		t.Errorf("expected 30 was %v", cc2.Cost)
		for _, ts := range cc1.Timespans {
			t.Log(ts.RateInterval)
		}
	}
	cc1.Merge(cc2)
	if len(cc1.Timespans) != 2 || cc1.Timespans[0].GetDuration().Seconds() != 60 {
		t.Error("wrong resulted timespans: ", len(cc1.Timespans))
	}
	if cc1.Cost != 91 {
		t.Errorf("Exdpected 91 was %v", cc1.Cost)
	}
}

func TestMultipleInputLeftMerge(t *testing.T) {
	t1 := time.Date(2012, time.February, 2, 17, 59, 0, 0, time.UTC)
	t2 := time.Date(2012, time.February, 2, 18, 01, 0, 0, time.UTC)
	cd := &CallDescriptor{Category: "0", Tenant: "vdf",
		Subject: "rif", Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc1, _ := cd.getCost()
	//log.Printf("Timing: %+v", cc1.Timespans[1].RateInterval.Timing)
	//log.Printf("Rating: %+v", cc1.Timespans[1].RateInterval.Rating)
	if cc1.Cost != 91 {
		t.Errorf("expected 91 was %v", cc1.Cost)
	}
	/*t1 = time.Date(2012, time.February, 2, 18, 01, 0, 0, time.UTC)
	t2 = time.Date(2012, time.February, 2, 18, 02, 0, 0, time.UTC)
	cd = &CallDescriptor{ToR: "0", Tenant: "vdf", Subject: "rif", Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc2, _ := cd.getCost()
	if cc2.Cost != 30 {
		t.Errorf("expected 30 was %v", cc2.Cost)
	}
	cc1.Merge(cc2)
	if len(cc1.Timespans) != 2 || cc1.Timespans[1].GetDuration().Seconds() != 120 {
		t.Error("wrong resulted timespan: ", len(cc1.Timespans))
	}
	if cc1.Cost != 120 {
		t.Errorf("Exdpected 120 was %v", cc1.Cost)
	}*/
}

func TestMultipleInputRightMerge(t *testing.T) {
	t1 := time.Date(2012, time.February, 2, 17, 58, 0, 0, time.UTC)
	t2 := time.Date(2012, time.February, 2, 17, 59, 0, 0, time.UTC)
	cd := &CallDescriptor{Category: "0", Tenant: "vdf", Subject: "rif",
		Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc1, _ := cd.getCost()
	if cc1.Cost != 61 {
		t.Errorf("expected 61 was %v", cc1.Cost)
	}
	t1 = time.Date(2012, time.February, 2, 17, 59, 0, 0, time.UTC)
	t2 = time.Date(2012, time.February, 2, 18, 01, 0, 0, time.UTC)
	cd = &CallDescriptor{Category: "0", Tenant: "vdf",
		Subject: "rif", Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc2, _ := cd.getCost()
	if cc2.Cost != 91 {
		t.Errorf("expected 91 was %v", cc2.Cost)
	}
	cc1.Merge(cc2)
	if len(cc1.Timespans) != 3 || cc1.Timespans[0].GetDuration().Seconds() != 60 {
		t.Error("wrong resulted timespan: ", len(cc1.Timespans), cc1.Timespans[0].GetDuration().Seconds())
	}
	if cc1.Cost != 152 {
		t.Errorf("Exdpected 152 was %v", cc1.Cost)
	}
}

func TestCallCostMergeEmpty(t *testing.T) {
	t1 := time.Date(2012, time.February, 2, 17, 58, 0, 0, time.UTC)
	t2 := time.Date(2012, time.February, 2, 17, 59, 0, 0, time.UTC)
	cd := &CallDescriptor{Category: "0", Tenant: "vdf",
		Subject: "rif", Destination: "0256", TimeStart: t1, TimeEnd: t2}
	cc1, _ := cd.getCost()
	cc2 := &CallCost{}
	cc1.Merge(cc2)
	if len(cc1.Timespans) != 1 {
		t.Error("Error mergin empty call cost: ", len(cc1.Timespans))
	}
}

func TestCallCostGetDurationZero(t *testing.T) {
	cc := &CallCost{}
	if cc.GetDuration().Seconds() != 0 {
		t.Error("Wrong call cost duration for zero timespans: ", cc.GetDuration())
	}
}

func TestCallCostGetDuration(t *testing.T) {
	cc := &CallCost{
		Timespans: []*TimeSpan{
			{
				TimeStart: time.Date(2013, 9, 10, 13, 40, 0, 0, time.UTC),
				TimeEnd:   time.Date(2013, 9, 10, 13, 41, 0, 0, time.UTC),
			},
			{
				TimeStart: time.Date(2013, 9, 10, 13, 41, 0, 0, time.UTC),
				TimeEnd:   time.Date(2013, 9, 10, 13, 41, 30, 0, time.UTC),
			},
		},
	}
	if cc.GetDuration().Seconds() != 90 {
		t.Error("Wrong call cost duration: ", cc.GetDuration())
	}
}

func TestCallCostToDataCostError(t *testing.T) {
	cd := &CallDescriptor{
		Category:    "data",
		Tenant:      "cgrates.org",
		Subject:     "rif",
		Destination: utils.ANY,
		TimeStart:   time.Date(2014, 3, 4, 6, 0, 0, 0, time.UTC),
		TimeEnd:     time.Date(2014, 3, 4, 6, 1, 5, 0, time.UTC),
		ToR:         utils.VOICE,
	}
	cc, _ := cd.getCost()
	_, err := cc.ToDataCost()
	if err == nil {
		t.Error("Failed to throw error on call to datacost!")
	}
}

func TestCallCostGetStartTime(t *testing.T) {
	cc := CallCost{}

	rcv := cc.GetStartTime()

	if rcv.Minute() != time.Now().Minute() {
		t.Error(rcv)
	}

	cc2 := CallCost{
		Timespans: TimeSpans{{TimeStart: time.Now()}},
	}

	rcv = cc2.GetStartTime()

	if rcv.Minute() != time.Now().Minute() {
		t.Error(rcv)
	}
}

func TestCallCostGetEndTime(t *testing.T) {
	cc := CallCost{}

	rcv := cc.GetEndTime()

	if rcv.Minute() != time.Now().Minute() {
		t.Error(rcv)
	}
}

func TestCallCostIsPaid(t *testing.T) {
	cc := CallCost{}

	rcv := cc.IsPaid()

	if rcv != true {
		t.Error(rcv)
	}

	cc2 := CallCost{
		Timespans: TimeSpans{{Increments: Increments{}}},
	}

	rcv = cc2.IsPaid()

	if rcv != false {
		t.Error(rcv)
	}
}

func TestCallCostToDataCost(t *testing.T) {
	str := "test"
	bl := false
	fl := 1.2
	cc := CallCost{
		Category:    str,
		Tenant:      str,
		Subject:     str,
		Account:     str,
		Destination: str,
		ToR:         str,
		Cost:        fl,
		Timespans: TimeSpans{{
			Increments: Increments{{}},
		}},
		RatedUsage:         fl,
		AccountSummary:     &AccountSummary{},
		deductConnectFee:   bl,
		negativeConnectFee: bl,
		maxCostDisconect:   bl,
	}

	exp := &DataCost{
		Category:         cc.Category,
		Tenant:           cc.Tenant,
		Subject:          cc.Subject,
		Account:          cc.Account,
		Destination:      cc.Destination,
		ToR:              cc.ToR,
		Cost:             cc.Cost,
		deductConnectFee: cc.deductConnectFee,
		DataSpans: []*DataSpan{{
			DataStart:      0,
			DataEnd:        0,
			Cost:           0,
			ratingInfo:     nil,
			RateInterval:   nil,
			DataIndex:      0,
			Increments:     []*DataIncrement{{}},
			MatchedSubject: "",
			MatchedPrefix:  "",
			MatchedDestId:  "",
			RatingPlanId:   "",
		}},
	}

	rcv, err := cc.ToDataCost()
	if err != nil {
		t.Error(err)
	}

	if !reflect.DeepEqual(rcv, exp) {
		t.Errorf("expected %v\n received %v\n", exp, rcv)
	}
}

func TestCallCostUpdateCost(t *testing.T) {
	cc := CallCost{
		deductConnectFee: false,
	}

	cc.UpdateCost()

	if cc.deductConnectFee != true {
		t.Error("didn't update")
	}
}

func TestCallCostUpdateRatedUsage(t *testing.T) {
	var cc *CallCost

	rcv := cc.UpdateRatedUsage()

	if rcv != 0 {
		t.Error(rcv)
	}
}